initial topology view (sample JSON data isn't complete)
diff --git a/web/ons-demo/index.html b/web/ons-demo/index.html
index 46316d2..580a230 100644
--- a/web/ons-demo/index.html
+++ b/web/ons-demo/index.html
@@ -27,7 +27,7 @@
 		<div id='traceButton' class='button'>Trace</div>
 	</div>
 	<div id='selectedFlows'>Selected Flows</div>
-	<div id='topology'>Topology</div>
+	<div id='topology'><div id='svg-container'> </div></div>
 </div>